Two boxes are held together by a strong wire and attached to the ceiling of an elevator by a second wire. The mass of the top box is 14.2 kg; the mass of the bottom box is 10.4 kg. The elevator accelerates upwards at 2.84 m/s2. (Assume the wire is relatively massless.) (a) Find the tension in the top wire (connecting points A and B). (b) Find the tension in the bottom wire (connecting points C and D).

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: